EP3430670A1 - Method of fabricating an energy storage device - Google Patents

Method of fabricating an energy storage device

Info

Publication number
EP3430670A1
EP3430670A1 EP17709755.7A EP17709755A EP3430670A1 EP 3430670 A1 EP3430670 A1 EP 3430670A1 EP 17709755 A EP17709755 A EP 17709755A EP 3430670 A1 EP3430670 A1 EP 3430670A1
Authority
EP
European Patent Office
Prior art keywords
layer
current collecting
groove
electrode layer
stack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP17709755.7A
Other languages
German (de)
English (en)
French (fr)
Inventor
Michael Rendall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dyson Technology Ltd
Original Assignee
Dyson Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dyson Technology Ltd filed Critical Dyson Technology Ltd
Publication of EP3430670A1 publication Critical patent/EP3430670A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • H01G11/12—Stacked hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/66—Current collectors
    • H01G11/68—Current collectors characterised by their material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/66—Current collectors
    • H01G11/70—Current collectors characterised by their structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/66—Current collectors
    • H01G11/72—Current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/74—Terminals, e.g. extensions of current collectors
    • H01G11/76—Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/0029—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/0029—Processes of manufacture
    • H01G9/0032—Processes of manufacture formation of the dielectric layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/0029—Processes of manufacture
    • H01G9/0036—Formation of the solid electrolyte layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/022—Electrolytes; Absorbents
    • H01G9/025—Solid electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/07—Dielectric layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
    • H01M10/0562—Solid materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/571—Methods or arrangements for affording protection against corrosion; Selection of materials therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/40—Printed batteries, e.g. thin film batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • This invention relates to a method of fabricating an energy storage device, and particularly, but not exclusively relates to an energy storage device comprising thin film cells having a solid electrolyte.
  • Solid-state thin film cells comprising layers of electrodes, electrolyte and current collectors are typically produced by first forming a stack comprising a first current collecting layer formed on a substrate, an electrode layer, an electrolyte layer, a second electrode layer and a second current collecting layer. The stack is then cut into separate sections to form individual cells. Each cell can then be coated with a protective layer in order to prevent passivation of the layers and possible shorts.
  • part of the protective layer is removed, for example by etching.
  • a mask can be applied prior to the coating process to ensure that a portion of each current collector is left exposed. In each instance, the additional step of masking or etching adds complexity and cost the production process.
  • a method of fabricating an energy storage device comprising: forming a stack comprising at least a first electrode layer, a first current collecting layer and an electrolyte layer disposed between the first electrode layer and the first current collecting layer; forming a first groove in the stack through the first electrode layer and the electrolyte layer, thereby forming exposed edges of the first electrode layer and the electrolyte layer; filling at least part of the first groove with an electrically insulating material thereby covering the exposed edges of the first electrode layer and the electrolyte layer with the insulating material; and cutting through the insulating material and the first current collecting layer along at least part of the first groove in order to form an exposed edge of the first current collecting layer.
  • the invention provides a simple, fast and low cast way of producing a solid-state cell having exposed current collectors which can then be readily connected electrically to other cells forming part of a cell stack.
  • the stack further may further comprise a second current collecting layer associated with the first electrode layer, wherein the first electrode layer and the electrolyte layer are disposed between the first and second current collecting layers.
  • the first groove may be formed in the stack through the second current collecting layer, thereby forming an exposed edge of the second current collecting layer.
  • the electrically insulating material may cover the exposed edge of the second current collecting layer.
  • the method may further comprise forming a second groove in the stack through the first current collecting layer, the electrolyte layer and the first electrode layer, thereby forming exposed edges of the first current collecting layer, the electrolyte layer and the first electrode layer, filling at least part of the second groove with an electrically insulating material thereby covering the exposed edges of the first current collecting layer, the electrolyte layer and the first electrode layer, and cutting through the insulating material and the second current collecting layer along at least part of the second groove in order to form an exposed edge of the second current collecting layer.
  • the first current collecting layer may form a second electrode layer.
  • the stack may further comprise a second electrode layer disposed between the first current collecting layer and the electrolyte layer and the first groove is further formed through the second electrode layer.
  • the first and/or second groove may be formed by a laser cutting operation.
  • a gaseous monomer may be provided in the region of the first and/or second grooves during the laser cutting operation such that the gaseous polymer is polymerised by the laser cutting operation within the grooves to form the electrically insulating material.
  • the step of filling at least part of the first groove with an electrically insulating material may comprises the step of filling at least part of the groove with a liquid.
  • the liquid may comprises an organic suspended liquid material.
  • the liquid may be cured in the groove.
  • the energy storage device may be an electrochemical cell or a capacitor.
  • Figure 1 is a schematic representation of an energy storage device comprising a plurality of cells
  • FIG 2 is a schematic illustration of the energy storage device shown in Figure 1 in which the cells are electrically connected;
  • Figures 3a to 3h illustrate a method of manufacturing the cells of the energy storage device shown in Figure 1 ;
  • Figure 4 is a schematic illustration of a variation of the method illustrated in Figures 3a to 3h.
  • Figure 5 shows the portion of Figure 4 within the area surrounded by a broken line.
  • FIG. 1 shows an energy storage device 1 comprising a first electrochemical cell 2 positioned on top of a second electrochemical cell 4.
  • the first and second cells 2, 4 are identical.
  • the first cell 2, however, is inverted.
  • Each cell 2, 4 comprises a stack having a negative current collecting layer 6 which also forms a negative electrode layer (which becomes the anode during discharge of the cell 2, 4), an electrolyte layer 8, a positive electrode layer 10 (which becomes the cathode on discharge of the cell 2, 4), and a positive current collecting layer 12.
  • Each cell 2, 4 is bounded along opposite sides by an insulating material 14, 16.
  • the insulating material 14 covers the edges of the electrolyte layer 8, the positive electrode layer 10 and the positive current collecting layer 12. The edge of the negative current collecting layer/negative electrode layer 6 on the left hand side of each cell 2, 4 is exposed.
  • the insulating material 16 covers edges of negative current collecting layer/negative electrode layer 6, the electrolyte layer 8 and the positive electrode layer 10. The edge of the positive current collecting layer 12 on the right hand side of each cell 2, 4 is exposed.
  • a benefit of the energy storage device 1 is that electrical connectors 18, 20 can be provide along opposite sides of the two cells 2, 4, as shown in Figure 2, such that the electrical connector 18 on the left contacts the negative current collecting layer 6 of each cell 2, 4, but is prevented from contacting the other layers by the insulating material 14, and the electrical connector 20 on the right contacts the positive current collecting layer 12, but is prevented from contacting the other layers by the insulating material 16.
  • the insulating material 14, 16 therefore prevents a short between the current collecting layers 6, 12 and the other layers in each cell 2, 4.
  • the electrical connectors 18, 20 may, for example, be a metallic material that is applied to the edges of the stack by sputtering. The cells 2, 4 can therefore be joined in parallel simply and easily.
  • Figure 3a shows a positive current collecting layer 12 comprising nickel foil, but it will be appreciated that an suitable metal could be used such as aluminium, copper or steel, or a metalised material including metalised plastics such as aluminium on polyethylene terephthalate (PET).
  • a first positive electrode layer 10 is deposited on the current collecting layer 12 for example by flood deposition or by vapour deposition, as shown in Figure 3b.
  • the positive electrode layer 10 forms the cathode during discharge and may comprise a material which is suitable for storing Lithium ions by virtue of stable chemical reactions, such as Lithium Cobalt Oxide or Lithium Iron Phosphate or alkali metal polysulphide salts.
  • a electrolyte layer 8 is deposited on top of the positive electrode layer 10, as shown in Figure 3c.
  • the electrolyte layer may comprise any suitable material which is ionically conductive, but which is also an electrical insulator such as Lithium Phosporous OxyNitride (LiPON).
  • a negative electrode layer 6 is deposited on top of the electrolyte layer 8, as shown in Figure 3d which completes assembly of a stack.
  • the negative electrode layer 6 also provides a negative current collector (which acts as an anode during discharge).
  • the negative current collector and the negative electrode layer may be separate layers.
  • the negative electrode layer may comprise a Lithium metal, Graphite, Silicon or Indium Tin Oxides.
  • the negative current collector may comprise nickel foil, but it will be appreciated that an suitable metal could be used such as aluminium, copper or steel, or a metalised material including metalised plastics such as aluminium on polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • Each layer may be deposited by flood deposition, which provides a simple and effective way of producing a highly homogenous layer.
  • a laser cutting tool is used to cut parallel alternate grooves 22, 24 in the upper and lower portions of the stack, as shown in Figure 3e.
  • the grooves 22 in the lower portion of the stack are offset from the grooves 24 in the upper portion of the stack.
  • the region of the stack between a lower groove 22 and an adjacent upper groove 24 corresponds to a single cell.
  • Each groove 22 in the lower portion of the stack is cut through the current collecting layer 12, the positive electrode layer 10 and the electrolyte layer 8 to the negative electrode layer 6.
  • Each groove 24 in the upper portion of the stack is cut through the negative electrode layer 6, electrolyte layer 8 and positive electrode layer 10 to the current collecting layer 12.
  • the cutting operation creates edges along each layer which are exposed within the respective grooves and exposes part of an upper surface of the current collecting layer 12 in the upper grooves 24 and part of the lower surface of the negative electrode layer 6 in the lower grooves 22. It will be appreciated that the depth of each groove must be extremely precise in order to cut through only the desired layers and to prevent, or at least minimise, any removal of the layer that is to remain intact.
  • a dual-photon laser cutting technique is the preferred cutting process because it is expected to provide the required accuracy.
  • other suitable cutting processes may be used for each step, for example any process that is suitable for removing material to form a groove and/or to separate cells.
  • Different cutting techniques for each step of forming the groove and for separating the cells may be used, for example ultrasound cutting may be followed by gas jetting.
  • the cutting operation is conducted in an environment comprising a gaseous monomer which, during the cutting operation, polymerises on the edges of the layers formed by the cutting process and on the revealed upper surface of the current collecting layer 12 and the revealed lower surface of the negative electrode layer 6 at the bottom of each groove.
  • the polymer provides an electrically insulating plug 26, 28 that covers the revealed edges and exposed portions of the surfaces of the layers within the groove, as shown in Figure 3f.
  • Any suitable polymer may be used, such as ethylene, vinyl chloride or tetra fluoroethylene.
  • electrically insulating plugs could be formed by filling the grooves with a liquid such as an organic suspended liquid material and then curing the liquid in the groove.
  • the stack is cut along the grooves 22, 24, as shown by dashed lines in Figure 3g, into separate cells as shown in Figure 3h.
  • the cutting operation may again be performed using a laser.
  • Each cut is through the centre of an insulating plug 26, 28 such that the plug 26, 28 is split in two pieces, each piece forming a protective covering over the edges and surfaces to which it has attached of each respective cell 2, 4.
  • Cutting through the entire stack creates exposed edges of the positive current collecting layer 12 and the negative electrode layer 6 of the first and second cells 2, 4, as shown in Figure 3h.
  • the second cell 4 is inverted and placed on top of the first cell 2 to produce the energy storage device 1 shown in Figure 1.
  • An electrical connector 18, 20, for example a metallic layer, is then formed by sputtering along each side of the energy storage device 1 in order to connect the positive current collecting layers 12 of each cell 2, 4 on one side of the energy storage device 1 and the negative electrode layer/negative current collecting layers 6 on the opposite side of the energy storage device 1, as described previously and as shown in Figure 2.
  • Figures 4 and 5 illustrate a variation of the method described above in which a continuous stack is built on a sheet of positive current collecting layer 12 that may, be for example, be drawn from a roll, from which hundreds and potentially thousands of cells can be cut.
  • the stack is folded back on itself, as shown in Figure 4, to create a z-fold arrangement having at least ten, preferably hundreds, and potentially thousands, of layers with each of the insulating plugs 26, 28 aligned, as shown in Figure 5.
  • a laser cutting process is then used to cut through all of the stacks (shown by the broken lines in Figure 5) in a single cutting operation for each of the aligned sets of plugs.
  • the stack may be formed such that it is in a charged state prior to the cutting of the grooves in the stack and prior to cutting the stack into separate cells.
  • the cutting of the grooves, which separate the energy storage components of the cells from each other and/or the subsequent cutting of the current collecting layers to separate the stack into individual cells can improve safety of the manufacturing and subsequent handling processes because a large stack storing a high amount of energy does not need to be handled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)
EP17709755.7A 2016-03-15 2017-03-02 Method of fabricating an energy storage device Pending EP3430670A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1604351.5A GB2548361B (en) 2016-03-15 2016-03-15 Method of fabricating an energy storage device
PCT/GB2017/050550 WO2017158319A1 (en) 2016-03-15 2017-03-02 Method of fabricating an energy storage device

Publications (1)

Publication Number Publication Date
EP3430670A1 true EP3430670A1 (en) 2019-01-23

Family

ID=55952315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17709755.7A Pending EP3430670A1 (en) 2016-03-15 2017-03-02 Method of fabricating an energy storage device

Country Status (10)

Country Link
US (1) US10763551B2 (zh)
EP (1) EP3430670A1 (zh)
JP (1) JP6704465B2 (zh)
KR (1) KR102146362B1 (zh)
CN (1) CN108886158B (zh)
AU (1) AU2017235770B2 (zh)
GB (1) GB2548361B (zh)
RU (1) RU2692060C1 (zh)
TW (1) TW201806225A (zh)
WO (1) WO2017158319A1 (zh)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2566473B (en) 2017-09-14 2020-03-04 Dyson Technology Ltd Magnesium salts
GB2566472B (en) 2017-09-14 2020-03-04 Dyson Technology Ltd Magnesium salts
GB2569390A (en) 2017-12-18 2019-06-19 Dyson Technology Ltd Compound
GB2569392B (en) 2017-12-18 2022-01-26 Dyson Technology Ltd Use of aluminium in a cathode material
GB2569388B (en) 2017-12-18 2022-02-02 Dyson Technology Ltd Compound
GB2569387B (en) 2017-12-18 2022-02-02 Dyson Technology Ltd Electrode
GB2575785B (en) * 2018-07-20 2021-12-22 Dyson Technology Ltd Stack for an energy storage device
GB2575790B (en) * 2018-07-20 2021-11-24 Dyson Technology Ltd Energy storage device
GB2575788B (en) * 2018-07-20 2022-02-09 Dyson Technology Ltd Energy storage device
GB2575789B (en) * 2018-07-20 2021-11-03 Dyson Technology Ltd Energy storage device
GB2575792B (en) * 2018-07-20 2021-11-03 Dyson Technology Ltd Stack for an energy storage device
GB2575787B (en) * 2018-07-20 2021-12-01 Dyson Technology Ltd Stack for an energy storage device
JP7266214B2 (ja) * 2019-09-30 2023-04-28 パナソニックＩｐマネジメント株式会社 電動工具、及び電池パック
TWI723680B (zh) * 2019-12-13 2021-04-01 位速科技股份有限公司 蓄電裝置及蓄電裝置組結構
RU2765222C1 (ru) * 2020-12-30 2022-01-26 Тхе Баттериес Сп. з о.о. Способ формирования пленки LiCoO2 и устройство для его реализации
JPWO2022176304A1 (zh) * 2021-02-19 2022-08-25
DE102022102761A1 (de) 2022-02-07 2023-08-10 Volkswagen Aktiengesellschaft Feststoffzellenbatterie sowie Verfahren zur Herstellung einer solchen Feststoffbatterie

Family Cites Families (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761500A (en) 1970-05-26 1973-09-25 Owens Illinois Inc Liquid double alkoxides
BE785737A (fr) 1971-07-05 1973-01-02 Ici Ltd Fibres d'oxydes metalliques
US4047289A (en) 1974-10-15 1977-09-13 Polaroid Corporation Method for forming a slurry battery cell
US3993508A (en) 1975-06-20 1976-11-23 Polaroid Corporation Method for manufacturing flat batteries
IT1112971B (it) 1979-04-04 1986-01-20 Anic Spa Processo per la sintesi di alcossialanati di metalli alcalino-terrosi
JPS5796472A (en) 1980-12-06 1982-06-15 Hitachi Maxell Ltd Manufacture of solid electrolytic cell
GB2128604A (en) 1982-10-19 1984-05-02 Harold Garton Emblem Aluminium alkoxide derivates
JPS6421870A (en) * 1987-07-15 1989-01-25 Matsushita Electric Ind Co Ltd Manufacture of solid electrolyte cell
FR2657552B1 (fr) 1990-01-30 1994-10-21 Elf Aquitaine Procede et dispositif de decoupe d'un ensemble multicouche constitue d'une pluralite de couches minces.
US5136046A (en) 1990-09-28 1992-08-04 Ethyl Corporation Preparation of amine alanes
JPH04269721A (ja) * 1991-02-26 1992-09-25 Sekisui Fine Chem Kk 表面が改質されたポリマービーズ及びその製造方法
DE4227720C2 (de) 1991-09-18 1998-05-20 Fraunhofer Ges Forschung Verfahren zur Herstellung von Beschichtungen aus Spinell sowie Verwendung der danach hergestellten Träger
US5411592A (en) 1994-06-06 1995-05-02 Ovonic Battery Company, Inc. Apparatus for deposition of thin-film, solid state batteries
US5718989A (en) 1995-12-29 1998-02-17 Japan Storage Battery Co., Ltd. Positive electrode active material for lithium secondary battery
US6616714B1 (en) 1998-09-14 2003-09-09 Hydro-Quebec Process for cutting polymer electrolyte multi-layer batteries and batteries obtained thereby
JP4701463B2 (ja) 1998-11-05 2011-06-15 パナソニック株式会社 電池用電極板の活物質除去方法
US20020110733A1 (en) 2000-08-07 2002-08-15 Johnson Lonnie G. Systems and methods for producing multilayer thin film energy storage devices
US6660432B2 (en) 2000-09-14 2003-12-09 Ilion Technology Corporation Lithiated oxide materials and methods of manufacture
JP2002343342A (ja) 2001-05-22 2002-11-29 Matsushita Electric Ind Co Ltd 二次電池電極とその製造方法
JP2003226955A (ja) * 2002-02-05 2003-08-15 Yaskawa Electric Corp 表面改質方法及びその装置
US6923837B2 (en) 2002-02-26 2005-08-02 Lithium Power Technologies, Inc. Consecutively wound or stacked battery cells
KR100560540B1 (ko) 2003-07-18 2006-03-15 삼성에스디아이 주식회사 리튬 이차 전지용 양극 활물질, 그의 제조 방법 및 그를포함하는 리튬 이차 전지
RU2343593C2 (ru) * 2004-05-31 2009-01-10 Ниссан Мотор Ко., Лтд. Сборный аккумулятор и способ его изготовления
FR2874128B1 (fr) 2004-08-03 2006-10-13 Commissariat Energie Atomique Microbatterie comportant des connexions traversantes et procede de realisation d'une telle microbatterie
US7276724B2 (en) * 2005-01-20 2007-10-02 Nanosolar, Inc. Series interconnected optoelectronic device module assembly
EP2434567A3 (en) 2006-07-18 2012-07-25 Cymbet Corporation Method and apparatus for solid-state microbattery photolithographic manufacture, singulation and passivation
KR20080079058A (ko) 2007-02-26 2008-08-29 엘지전자 주식회사 박막형 태양전지 모듈과 그의 제조방법
US7862627B2 (en) * 2007-04-27 2011-01-04 Front Edge Technology, Inc. Thin film battery substrate cutting and fabrication process
KR101587954B1 (ko) * 2007-10-25 2016-01-22 어플라이드 머티어리얼스, 인코포레이티드 박막 배터리들의 대량 생산을 위한 방법
JP5007677B2 (ja) * 2008-01-31 2012-08-22 日本ケミコン株式会社 固体電解コンデンサ及びその製造方法
JP5120026B2 (ja) * 2008-03-31 2013-01-16 日本ケミコン株式会社 固体電解コンデンサ及びその製造方法
CA2726864C (en) * 2008-04-11 2013-09-10 Kawasaki Jukogyo Kabushiki Kaisha Sealed rectangular battery and battery module using same
US20110291043A1 (en) 2008-09-24 2011-12-01 The Regents Of The University Of California Aluminum Substituted Mixed Transition Metal Oxide Cathode Materials for Lithium Ion Batteries
FR2937633B1 (fr) 2008-10-24 2010-11-19 Saft Groupe Sa Materiau d'electrode positive pour accumulateur lithium-ion
FR2943181B1 (fr) 2009-03-16 2011-05-13 Commissariat Energie Atomique Microbatterie au lithium et son procede de fabrication
JP5247570B2 (ja) 2009-04-14 2013-07-24 株式会社アルバック 薄膜リチウム二次電池製造装置及び薄膜リチウム二次電池製造方法
CN101562245B (zh) 2009-05-22 2011-01-19 北京工业大学 一种高倍率富锂正极材料的改性方法
US8580332B2 (en) 2009-09-22 2013-11-12 Applied Materials, Inc. Thin-film battery methods for complexity reduction
US8464419B2 (en) 2009-09-22 2013-06-18 Applied Materials, Inc. Methods of and factories for thin-film battery manufacturing
CN101694876A (zh) 2009-10-22 2010-04-14 江西江特锂电池材料有限公司 富锂锰基正极材料及其制备方法
WO2011052607A1 (ja) 2009-10-29 2011-05-05 Ａｇｃセイミケミカル株式会社 リチウムイオン二次電池用正極材料の製造方法
JP2011108603A (ja) 2009-11-20 2011-06-02 Ulvac Japan Ltd 薄膜リチウム二次電池及び薄膜リチウム二次電池の形成方法
US8956761B2 (en) 2009-11-30 2015-02-17 Oerlikon Advanced Technologies Ag Lithium ion battery and method for manufacturing of such battery
US20120225199A1 (en) 2010-02-05 2012-09-06 International Battery, Inc. Current collector coating for li-ion battery cells using aqueous binder
DE102010029282A1 (de) 2010-05-25 2011-12-01 Robert Bosch Gmbh Verfahren und Vorrichtung zur Herstellung einer Dünnschichtbatterie
US9385395B2 (en) 2010-10-18 2016-07-05 Microvast, Inc. Continuous prismatic cell stacking system and method
CN102054986B (zh) 2010-11-16 2013-04-10 中国科学院宁波材料技术与工程研究所 微波法制备的超高容量锂离子电池正极材料及其方法
DE102010044080A1 (de) 2010-11-17 2012-05-24 Varta Microbattery Gmbh Herstellungsverfahren für Elektroden
US9130238B2 (en) 2011-06-10 2015-09-08 Applied Materials, Inc. Methods of and hybrid factories for thin-film battery manufacturing
US20140007418A1 (en) 2011-06-17 2014-01-09 Applied Materials, Inc. Mask-Less Fabrication of Thin Film Batteries
EP2721689B1 (en) 2011-06-17 2018-05-09 Applied Materials, Inc. Thin film battery fabrication with mask-less electrolyte deposition
WO2013035519A1 (ja) 2011-09-09 2013-03-14 株式会社 村田製作所 全固体電池およびその製造方法
WO2013044114A1 (en) 2011-09-21 2013-03-28 Itn Energy Systems, Inc. Architectures for solid state batteries
CN103035900A (zh) 2011-10-10 2013-04-10 北大先行科技产业有限公司 一种高容量富锂正极材料及其制备方法
WO2013118659A1 (ja) 2012-02-06 2013-08-15 日本電気株式会社 リチウムイオン電池およびその製造方法
DE102012208010A1 (de) 2012-05-14 2013-11-14 Robert Bosch Gmbh Verfahren zur Herstellung einer Energiezelle und Vorrichtung zum Durchführen desselben
JP5825436B2 (ja) 2012-05-30 2015-12-02 エルジー・ケム・リミテッド 電極タブ接合性に優れた電極組立体、これを含む電池セル、デバイス及びその製造方法
FR2993101B1 (fr) 2012-07-06 2015-07-17 Commissariat Energie Atomique Procede d'assemblage et d'encapsulation de microbatteries au lithium et microbatteries ainsi obtenue
CN102881873B (zh) 2012-09-28 2015-05-13 广东中科信泰新能源有限公司 层状富锂材料的制备方法
KR20150096756A (ko) 2012-12-19 2015-08-25 어플라이드 머티어리얼스, 인코포레이티드 수직 박막 배터리들의 마스크-리스 제조
KR20140081468A (ko) 2012-12-21 2014-07-01 삼성에스디아이 주식회사 전해액 첨가제, 이를 포함하는 전해액 및 리튬 이차 전지
FR3002695B1 (fr) 2013-02-28 2021-04-02 I Ten Procede de fabrication d'une batterie monolithique entierement solide
US9437863B2 (en) 2013-03-05 2016-09-06 GM Global Technologies Operations LLC Surface coating method and a method for reducing irreversible capacity loss of a lithium rich transitional oxide electrode
CN103311513B (zh) 2013-06-03 2017-04-05 青岛乾运高科新材料股份有限公司 一种高性能层状固溶体锂电正极材料及其制备方法
CN103545519B (zh) 2013-07-19 2015-09-09 北京科技大学 一种碳包覆富锂正极材料及其制备方法
US20150050522A1 (en) 2013-08-14 2015-02-19 Arumugam Manthiram Lithium-rich layered oxide cathodes and rechargeable batteries containing lithium-rich layered oxides
KR101738734B1 (ko) 2013-09-26 2017-06-08 주식회사 엘지화학 파우치형 이차전지
KR101619604B1 (ko) 2013-09-26 2016-05-10 주식회사 엘지화학 전극조립체 및 이차전지의 제조방법
KR101788353B1 (ko) * 2013-11-28 2017-11-15 주식회사 엘지화학 구형의 전극조립체 및 이를 구비한 이차전지
CN203733894U (zh) * 2014-01-17 2014-07-23 宁德新能源科技有限公司 锂离子电池
DE102014100574A1 (de) 2014-01-20 2015-07-23 Teamtechnik Maschinen Und Anlagen Gmbh Batteriezellenverbindung
US9748582B2 (en) 2014-03-31 2017-08-29 X Development Llc Forming an interconnection for solid-state batteries
AR102033A1 (es) 2014-07-03 2017-02-01 Csir Producción de un material estratificado de óxido de litio-manganeso-níquel-cobalto
KR20160091172A (ko) 2015-01-23 2016-08-02 주식회사 포스코이에스엠 잔류 리튬이 감소된 양극활물질의 제조 방법 및 이에 의하여 제조된 잔류 리튬이 감소된 양극활물질
WO2016210419A1 (en) 2015-06-26 2016-12-29 Florida State University Research Foundation, Inc. Dry process method for producing electrodes for electrochemical devices and electrodes for electrochemical devices
KR101728826B1 (ko) 2015-07-14 2017-04-20 울산과학기술원 마그네슘 이차 전지용 전해질, 및 이를 포함하는 마그네슘 이차 전지
KR102010014B1 (ko) 2015-08-31 2019-08-12 주식회사 엘지화학 리튬 이차전지 및 그의 구동방법
US10978709B2 (en) 2015-11-16 2021-04-13 The Regents Of The University Of California Lithium-excess cathode material and co-precipitation formation method
CN105742607A (zh) 2016-04-15 2016-07-06 东华大学 一种提高富锂正极材料首次库伦效率的方法
CN105810934B (zh) 2016-05-09 2019-07-05 北京工业大学 一种稳定富锂层状氧化物材料晶畴结构方法
CN106410186B (zh) 2016-11-17 2019-01-25 天津理工大学 一种富锂层状氧化物正极材料的制备方法及应用

Also Published As

Publication number Publication date
TW201806225A (zh) 2018-02-16
JP2019511811A (ja) 2019-04-25
CN108886158B (zh) 2021-07-20
US20190115627A1 (en) 2019-04-18
KR20180121619A (ko) 2018-11-07
AU2017235770B2 (en) 2020-01-16
AU2017235770A1 (en) 2018-09-06
CN108886158A (zh) 2018-11-23
GB2548361A (en) 2017-09-20
WO2017158319A1 (en) 2017-09-21
KR102146362B1 (ko) 2020-08-20
RU2692060C1 (ru) 2019-06-20
JP6704465B2 (ja) 2020-06-03
US10763551B2 (en) 2020-09-01
GB201604351D0 (en) 2016-04-27
GB2548361B (en) 2020-12-02

Similar Documents

Publication Publication Date Title
AU2017235770B2 (en) Method of fabricating an energy storage device
EP2973831B1 (en) Electrochemical cell including a folded electrode, components thereof, battery including the electrochemical cell, and method of forming same
WO2019131503A1 (ja) 全固体電池、その製造方法および加工装置
EP2975671B1 (en) Thin film battery structure and manufacturing method thereof
US10553858B2 (en) Lithium electrode for a rechargeable lithium-ion battery and method for the manufacture thereof
CN107819103B (zh) 具有提高的活性材料份额的电极
US11990587B2 (en) Stack for an energy storage device
JP7077000B2 (ja) 電池セルのための電極スタックを製造する方法、及び、電池セル
KR102065736B1 (ko) 이차전지용 크루드 셀의 제조방법
US20210273241A1 (en) Energy storage device
US11476452B2 (en) Stack for an energy storage device
JP7161601B2 (ja) エネルギー貯蔵デバイス
KR102674875B1 (ko) 에너지 저장 디바이스
US20210273211A1 (en) Stack for an energy storage device
WO2022259664A1 (ja) 電池および電池の製造方法
US20210273306A1 (en) Energy storage device

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180905

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)